Delete animation of object
The fastest way I know to delete all the animations of an object:

Select object
Press Spacebar or F3
Type &quot;Remove anim&quot;
The menu item &quot;Remove Animation&quot; will appear.
Using keyboard, select that menu item and press Enter or
Return.

V2.8+ : Alternatively after selecting the objects, go to Object &gt; Animation &gt; Clear Keyframes, and click again on the prompt asking you to Remove Animation.
I do this often. I wish I knew an even faster way. This way, you only need one mouse click, to select the object.